HSM320

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The Kollmorgen HSM320 is part of the HSM Brushless Servo Motors and has a rotor moment of inertia of 0.00033 kg-m^2. This servo motor operates with a torque constant of 0.33 Nm/A (sine wave), a winding resistance of 2.3 Ohms ~10%, and a maximum operating speed of 4000 rpm. Additionally, it weighs 7.7 kilograms.

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Wake Industrial Warranty
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Product Description:

Numerous automation tasks are being performed in the packaging, assembling, and labelling industry that requires consistent performing motors to drive heavy machinery with minimal downtimes. To meet such high level of operational requirements, the series called has been designed and manufactured by Kollmorgen. The HSM320 servo motor has the characteristic high-speed output of the HSM series due to its superior engineering. The plus point of this unit is its quieter operations that helps in alleviating the overall noise levels within any industry.

The HSM320 has an interesting torque profile with a sine and square torque constants of 0.33 Nm/A and 0.36 Nm/A respectively. The sine wave torque constant of the HSM320 servo motor is 0.33 Nm/A whereas the square wave torque constant is 0.36 Nm/A. The unit is designed with a special winding that exhibits a resistance of 2.3 ohms and inductance of 3.6 mH. The voltage constant of the motor is 43 V/Krpm and its thermal resistance is 1.0 degrees C/Watt. The light-weight special material rotor of the unit allows for high-speed operation up to 4000 RPM max and the rotor has a 0.00033 kgm2 moment of inertia. The overall presence of the unit is compact with a weight of only 7.7 kg. This product is available with a 1-year warranty when purchased from Wake Industrial.

Encoder Connector
22 AWG / 0.34 mm2
Max. Operating Speed
4000 rpm
Motor Weight
Net 7.7 kg / 17 lb
Power Connector
16 AWG / 1.5 mm2
Radial Load Force Rating At 5000 Rpm
45 lb / 20.4 kg
Rotor Moment Of Inertia
0.00033 kg-m2 / 0.0029 lb-in-s2
Shipping Weight
9.3 kg / 20.5 lb
Thermal Resistance
1.0 degrees C/Watt
Torque Constant (sine Wave Kt)
0.33 Nm/A / 2.92 lb-in/A
Torque Constant (square Wave Kt)
0.36 Nm/A / 3.19 lb-in/A
Voltage Constant (ke)
43 V/krpm
Winding Inductance
3.6 mH
Winding Resistance
2.3 Ohms ~10%
  • 401-34433-00

Frequently Asked Questions about HSM320:

Q: What is the operating voltage?

A: It is 4000 RPM.

Q: What is the weight of the unit?

A: It is 7.7 kg.

Q: What is the winding inductance?

A: It is 3.6 mH.

Q: What is the winding resistance?

A: It is 2.3 Ohms.

Q: What is the rotor moment of inertia?

A: It is 0.00033 kg-m^2.


Internal Product Review

  • ‘‘The HSM320 servo motor finds perfect application at our workplace. It gives a consistent performance and requires least maintenance which makes it a practical purchase.’’

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